Two years ago, I traded for a Lyman GPR left-handed flint in .54 caliber. It was used so had some handling marks on the barrel and on the stock. Naturally, I wanted to get away from the factory look, so I disassembled it and started sanding and stripping. I, too, did not like all the lettering on the barrel about reading the manual and the other foreign implications, so I set about draw filing it all away. Surprisingly, the lettering was not too deep and draw filed away rather easily. I didn't think to peen the lettering, but believe that to be a great idea. Just don't peen it too hard or you will have more dents to draw file away. After draw filing, I sanded down to about 220 to remove all the remainder of the bluing from the barrel. Then I used LMF barrel brown to brown it a deep rich brown. You cannot tell that lettering ever existed on it. I did leave the Lyman Great Plains lettering and the caliber designation on the barrel. My theory is always when in doubt, start filing and sanding and it usually turns out. I browned all my furniture and gave the stock an oil finish and it looks great. Good luck.